LU-6142 utils: Fix style issues for liblustreapi.c

LU-6142 utils: Fix style issues for liblustreapi.c

This patch fixes issues reported by checkpatch
for file lustre/utils/liblustreapi.c

Test-Parameters: trivial
Signed-off-by: Arshad Hussain <arshad.super@gmail.com>
Change-Id: I901dfbd7e489e4a074b329c59370f76e0d87fe31
Reviewed-on: https://review.whamcloud.com/38709
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: Ben Evans <beevans@whamcloud.com>
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>